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Mayfly Family Baetidae (Blue-Winged Olives)

Pictures Below

This is page 3 of specimens of Baetidae. Visit the main Baetidae page for:

  • The behavior and habitat of Baetidae.
  • 10 underwater pictures of Baetidae.
  • 2 streamside pictures of Baetidae.

Pictures of 98 Mayfly Specimens in the Family Baetidae:

Specimen Page:1234...11
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 4 PicturesThis Baetis nymph is quite a bit larger than any of the others I found in winter 2004. Abdomen segment 5 is only slightly pale while 9 and 10 are quite pale. The tail is banded at the tip. Its body measures about 9mm long. It's much larger than the other Baetis specimens I collected, and it has quite well-developed wingpads.

It's most likely a mature nymph from a very early-hatching brood. It comes from the headwaters of a very small, very spring-fed Lake Superior tributary, which wasn't at all frozen despite very frigid temperatures and 3 feet of snow on the ground.
Collected February 5, 2004 from Schacte Creek, Bayfield County in Wisconsin
Added to by Troutnut on January 25, 2006
Female Anafroptilum album (Tiny Sulphur Dun) Mayfly DunFemale Anafroptilum album (Tiny Sulphur Dun) Mayfly Dun View 3 PicturesApprox. 5 mm. This is a very significant hatch. It is mostly seen at the height of Summer and I was very surprised to see it emerging this late in the season and in such numbers. When this one is emerging, the fish can become quite selective.
Collected November 9, 2011 from the Fall River in California
Added to by Entoman on December 10, 2011
Callibaetis ferrugineus (Speckled Spinner) Mayfly AdultCallibaetis ferrugineus (Speckled Spinner) Mayfly Adult View 3 PicturesThese adults are probably C. ferrugineus.
Collected August 13, 2009 from the Flathead River-lower in Montana
Added to by Bnewell on June 27, 2011
Female Baetis (Blue-Winged Olives) Mayfly SpinnerFemale Baetis (Blue-Winged Olives) Mayfly Spinner View 4 PicturesI captured and photographed this specimen as a dun before she molted into the spinner photographed here. Her wings got a bit torn up in the process.
Collected April 19, 2006 from Mongaup Creek in New York
Added to by Troutnut on April 21, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 3 PicturesThis one's tails are chopped off and it's missing a leg.
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to by Troutnut on January 25, 2006
Specimen Page:1234...11
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